Behind display proximity sensing
US12189905B2 · kind B2 · utility
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1References
20Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Feb 7, 2022 |
| Grant date | Jan 7, 2025 |
| Priority date | — |
| Expiry date | Feb 7, 2042 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F2203/04101
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
An optical device includes a display and an optical sensor. The display includes display circuitry. The optical sensor is arranged behind the display. The optical sensor includes an emitter for emitting light through the display and a receiver for receiving light reflected back through the display. An absorption of the display is wavelength dependent and the absorption of the display is 50% at a first wavelength. The emitter is configured to emit light at a second wavelength greater than the first wavelength.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.